as you already know, three people died, 8-year-old martin richard, 29-year-old krystle campbell and lu lengzi. this is a live look inside the cathedral of the holy cross, the great cathedral after the end of the civil war. first lady michelle obama is with the president. what you're hearing now is the cellist yo yo ma. massachusetts governor devall patrick is alongside the president and first lady, former governor mitt romney is also attending. as boston begins its healing process, another tragedy is unfolding in texas. last night a fertilizer plant exploded in the town called west, 20 miles north of waco. volunteer firemen had been trying to put out the fire when a blast leveled 50 to 75 homes and other buildings, registered as more than a 2.1 earthquake. rescue workers are only now assessing the devastation in the daylight. the president is expected to ea boston in a few moments. first norah o'donnell, co-anchor of "cbs this morning" is joining me. norah, you've been talking to the white house. what have they told you? >> even as the president was on his way flying to boston, he was